Structure and mechanical design for a large-aperture telescope

doi:10.1117/12.2314933

CORC > 光电技术研究所 > 中国科学院光电技术研究所 > 光电工程总体研究室（一室）

	Structure and mechanical design for a large-aperture telescope
	Tan, Yufeng 1,2,3; Wang, Jihong 1,2; Ren, Ge 1,2; Ren, Xiaoli 1,2,3; Xie, Zongliang 1,2,3; Li, Dong 1,2,3
	2018
会议日期	OCT 24-26, 2017OCT 24-26, 2017
会议地点	Nanjing, PEOPLES R CHINANanjing, PEOPLES R CHINA
关键词	telescope mount structure bearing drive cooling system primary mirror
卷号	10697
DOI	10.1117/12.2314933
页码	1069734
英文摘要	For a better understanding and forecasting of the universe, the high resolution observations are needed. The large-aperture telescope is an integrated success with a combination of material, mechanics, optics and electronics. The telescope is a classic Cassegrain configuration with open structure, alt-azimuth mount, and retractable dome. The instrumentation has a rotating mass of approximately 52 tons and stands over 9 m tall. The 3-m aperture primary mirror is a honeycomb lightweighted mirror with fused silica material and active cooling. The paper will address preliminary design and development of the telescope mount structure, axes drive system, encoder mount and primary mirror system. The structure must have the best performance of stiffness and stability to demand an acceptable image quality. As the largest optical element of the telescope, primary mirror must be well controlled and protected both during operational and non-operational periods. An active cooling system of primary mirror is provided by a flushing subsystem at the front side and sucking subsystem on the central hole to keep the temperature of the facesheet close to that of ambient air. A two-layer mirror cover mounted on the elevation ring is proposed to protect the optical elements and inner beam tube from dust, dirt and debris. Furthermore, the latest plans for future upgrades will be also described.
会议录	Proceedings of SPIE - FOURTH SEMINAR ON NOVEL OPTOELECTRONIC DETECTION TECHNOLOGY AND APPLICATION
文献子类	C
语种	英语
ISSN号	0277-786X
WOS记录号	WOS:000435407700104
WOS关键词	MIRROR ; MOUNT
内容类型	会议论文
源URL	[http://ir.ioe.ac.cn/handle/181551/9127]
专题	光电技术研究所_光电工程总体研究室（一室）
通讯作者	Tan, Yufeng
作者单位	1.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China; 2.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China; 3.University of Chinese Academy of Sciences, Beijing; 100039, China
推荐引用方式 GB/T 7714	Tan, Yufeng,Wang, Jihong,Ren, Ge,et al. Structure and mechanical design for a large-aperture telescope[C]. 见:. Nanjing, PEOPLES R CHINANanjing, PEOPLES R CHINA. OCT 24-26, 2017OCT 24-26, 2017.